JP2015505091A5

JP2015505091A5 -

Info

Publication number: JP2015505091A5
Application number: JP2014546668A
Authority: JP
Filing date: 2012-12-12
Publication date: 2016-02-12
Anticipated expiration: 2032-12-12

Claims

A system including an accelerated processing device electrically connected to a cache comprising:
With a controller,
The controller is
Receiving a command message, wherein the command message includes instructions accessed during processing by the accelerated processing device, the instructions comprising data associated with a portion of the plurality of portions of memory. Including, and
Said command message, the method comprising interpreting the command message by determining whether including preloading instructions for pre-loading the part to be accessed out of the memory to the cache, the command When it is determined that a message includes the preloading instruction, at least the part of the memory is preloaded into the cache, and when it is determined that the command message does not include the preloading instruction, Comparing a command message instruction with a cache access history, and determining, based on a comparison of the command message and the cache access history, to preload at least the portion of the memory into the cache;
And that on the basis of at least one of (i) locality reference information and (ii) the policy information of the cache, to determine which of the plurality of portions of said memory for preloading the cache,
And to create a fetch message that contains the data related to the contents of the previous Symbol part,
And outputting the pre-Symbol fetch message to the cache,
Configured to do the system.

Further comprising system of claim 1, the host processor that is configured to output the command message including data relating to said portion of said memory.

The policy information is:
How the preloaded portion of the memory is stored in the cache and whether the block of the cache is (1) read only or (2) both read and write Determine when it will be written,
The fetch message to the cache, to load the data from a portion of the memory on the basis of the policy information system of claim 1.

The command message includes a locality of references information system of claim 1.

The locality reference information is based on the temporal locality of a portion of the memory system according to claim 1.

The locality reference information is based on the spatial locality of a portion of the memory system according to claim 1.

A computer-implemented method for preloading a cache, comprising:
The method comprising: receiving a command message, the command message may include instructions that are accessed during processing by the Accelerated processing device, the instruction is associated with some of the plurality of portions of the memory Including data,
Said command message, the method comprising interpreting the command message by determining whether including preloading instructions for pre-loading the part to be accessed out of the memory to the cache, the command When it is determined that a message includes the preloading instruction, at least the part of the memory is preloaded into the cache, and when it is determined that the command message does not include the preloading instruction, Comparing a command message instruction with a cache access history, and determining, based on a comparison of the command message and the cache access history, to preload at least the portion of the memory into the cache;
Determining which of the plurality of portions of the memory are preloaded into the cache based on at least one of (i) the specified locality reference information and (ii) the specified policy information of the cache;
Creating a fetch message that includes data related to the portion of content;
Sending the fetch message to the cache;
Including a method.

The policy information is:
How the preloaded portion of the memory is stored in the cache and whether the block of the cache is (1) read only or (2) both read and write Determine when it will be written,
The fetch message to the cache, to load data from a portion of the memory The method of claim 7.

The method of claim 7 , wherein the command message includes the locality reference information.

The method of claim 7 , wherein the locality of the reference information is based on a temporal locality of the portion of the memory.

The method of claim 7 , wherein the locality of the reference information is based on a spatial locality of the portion of the memory.

Said controller, said command message, by determining whether or not including pre-loading command having a physical address for each portion of the memory, is configured to interpret said command message, according to claim 1 System.

Said controller, said command message, by determining whether or not including pre-loading instruction having a virtual address for a portion of the memory, is configured to interpret the command message, according to claim 1 System.

The system of claim 13 , wherein the controller is configured to translate a virtual address for a portion of the memory to a physical address.

The method of claim 7 , wherein interpreting the command message further comprises determining whether to include a preloading instruction having a virtual address for a portion of the memory.

16. The method of claim 15 , further comprising converting a virtual address for the portion of memory to a physical address.

The method of claim 7 , wherein interpreting the command message further comprises determining whether to include a preloading instruction having a physical address for a portion of the memory.